Flat-iron.



P. JOHNSON.

FLAT IRON.

APPLICATION FILED FEB. 13, 1913. 1,092,839. Patented Apr.14, 1914.

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WWE@ STATES PATENT FFQE.

FRITZ JOHNSON, OF RACINE, WISCONSIN, ASSIG-NOR TO JOHNSON COMBINED PRESS- ING 8c REFINISHING IRON COMPANY, WISCONSIN;

OF RACINE, WISCONSIN, A CORPORATION OF Frammen.

To all 107mm, it may concern.'

Be it known that I, FRITZ JOHNSON, a citizen of the United States, residing at Racine, in the county of Racine and State of Wisconsin, have invented certain new and useful Improvements in Flatlrons, of which the following is a specilication, reference being had to the accompanying drawing, forming a part thereof.

This invention relates more particularly to gas heated at irons. Y Y

The main objects of the invention are to effect a thorough and uniform mixture of air with the gas just before it issues from` the burner jets or apertures and is burned and thus to insure more perfect combustion and greater economy in the consumption of` gas, avoiding smoke and odor; to preventv embodying the invention; Fig. 2 is a hori*` zontal section on the line 2-2, Fig. 1; and Fig. 3 is a vertical cross section on the line 3 3, Fig. 1.

The iron comprises three main parts or sections, a base a, a body and burner section and a cover and handle section c. The base a is formed with an upwardly projecting marginal flange Z and with a central and vertical threaded socket e. The body and burner section b has double or outer and inner walls f and g, forming an air and gas mixing and an insulating cham ber 7L, surrounding a combustion chamber t, and extending from the junction of the body section Y) with the base a, nearly to the cover and handle section c. The section b is iitted and seated on the top of the flange d;

which it overhangs on the inner side, and is formedin the lower part thereof over- Speccation of Letters Patent.

Application led February 13, 1913.

Patented Apr. la, 1914. Serial No. 748,268.

hanging the base, with downwardly directed jet apertures y'. Air inlet openings c are formed in the walls of the iron adjacent to the jet apertures y', for supplying air to the combustion chamber and insuring perfect combustion of the mixture lof gas and air as it issues from the 'jet apertures j. These openings are preferably formed as shown, partly in the base a and partly in the section t, but they may be formed entirely in either of said parts. At the ends of the iron, which is preferably of lenticular shape in cross section as shown in Fig. 2, the section b is formed at the top with raised 'bearings Z, on which the cover and handle section c is removably seated, openings m on each side of the iron for the escape of the products of combustion of the burner from the top of the combustion chamber z', being thus provided.

The section Z9 is formed or provided with a bridge or cross piece at, which is centrally perforated in alinement with the socket e in the base, and the several sections of the iron are connected and secured together by a single bolt o, bridge piece, and provided with a lock nut p for securing it in place in the bridge piece. The section is formed or provided on the under side with lugs g, which fit into the internal angles in the base flange d at the ends of the iron and hold the sections in proper relation to each other when they are fastened together by the bolt 0, as shown in Figs. l and 3. The bolt o extends above the lock nut 79 and is provided at its upper end with a cross head r, the overhanging ends of which are formed on the under side with opposite inclines, as shown in Fig. 1.

The cover and handle section c consists of two spaced parallel plates s and t, which are secured to each other and to the handle frame it by screws e. The plate t is formed with threaded bosses for the screws o and at the ends with upwardly projecting flanges or bearings fw, for supporting the plate s at a distance above it and forming an insulating and Ventilating space between the plates to keep the handle cool. The lower plate t is also formed with openings w, adjacent to its ends and on the under side with lugs y which t into sockets in threaded in said socket and the bearings Z to hold the cover and handle section c and the body and burner section b in proper relation to each other when they are secured together by the bolt 0.

A flanged locking piece e, fitted to turn in a central opening in the plate t and held in place by its iange between the plates s and t, is formed with an elongated slot 2, to pass over the head 1^ on the bolt o and permit the upper face of the locking piece to be turned into engagement with the inclines on the under side of the overhanging ends of said head, as shown by the drawing. The locking piece is provided with an arm or handle 3, which projects laterally between the plates s and t to one side of the cover section, and affords convenient means for turning the locking piece. The top plate s of the cover section is formed with a transverse slot to receive the head r when the parts of the iron are assembled, as shown in Figs. l and 3. The body and burner section Z) is provided at one end with the usual gas and air supply connection, consisting of a tube il threaded or otherwise secured at one end in a boss on the section Z), in communication with the chamber h and provided at itsl other end with a nipple 5 for the attachment of a gas supply hose, and adjacent thereto with air inlet openings 6.

In the operation of the iron the gas and air supplied thereto through the tube 4c are checked in their flow through the chamber 7L and are heated or warmed by contact with the wall g and expand, so that when the mixture issues from the jet apertures .7' it burns with a hot blue flame, which is projected downward against the bottom of the base. The cool air entering the chamber 7L with the gas through the tube 4, circulating in said chamber around the iron, prevents the outer wall f of section b from being overheated and scorching articles coming in contact therewith, said chamber thus serving the two-fold function of a mixing and expanding chamber for thoroughly mixing and warming the gas and air, and an insulating chamber separating the outer wall f from the inner wall g and thus preventing the outer wall from becoming sufficiently heated to scorch clothing or other fabrics coming in contact with it, By turning the arm or handle 3 into the position indicated by dotted lines, Fig. 2, the slot 2 in the locking piece .e is brought into register with the cross head r, and the cover and handle section c may then be removed from the body and burner section, affording access to the combustion chamber and interior parts of the iron for cleaning, repairing or inspecting the same. Broken or defective parts of the iron may be readily replaced by unscrewing the bolt o which connects the base a and section b from the socket e in the base, or by removing the screws o which connect the plates s and t and the handle frame u.

Various changes in minor details of construction and arrangement of parts may be made without departure from the principle and scope of the invention.

I claim:

1. A fiat iron having an outer double wall forming an air and gas mixing and an insulating chamber surrounding the combustion chamber and extending substantially from the bottom portion of the combustion chamber to its top, said mixing and insulating chamber having jet apertures in the lower part thereof and a gas and air supply connection. f i

2. In a flat iron the combination of a base having an upwardly projecting marginal flange, a double walled body and burner sec- Y tion seated upon and overhanging said flange on `the inner side thereof and forming a mix-V ing and insulating chamber surroundinga combustion chamber substantially from its bottom portion to its top and having downwardly directed jet apertures in the lower overhanging part thereof inside of said ange, and a gas and air supply connection.

3. In a flat irony the combination of a base section having central screwthreaded socket, a hollow body and burner section seated on the base section and having a centrally perforated bridge piece spanning the opening between opposite walls of the iron, and a single connecting bolt passing through said bridge piece and threaded in said socket.

4. In a flat iron the combination of'a base section having an upwardly projecting marginal flange and a central threaded socket, a hollow body and burner section seated on said flange and having a'centrally perforated bridge piece spanning the space'between opposite walls of the iron, a cover section removably seated on the-top of said body and burner section and provided with a handle,

and a cover removably seated on said body and burner section and having a locking piece movable into and out of engagement with the bolt head.

6. In a flat iron the combination with a hollow body section having an upwardly projecting bolt or stud provided at its upper end with a cross head having opposite in- @lines on the under side of its overhanging In Witness whereof I hereunto ax my ends, a Cover and handle section removably signature in presence of tWo Witnesses, seated on said body section, and a locking piece swveled in said cover and handle seo- FRITZ JOHNSON f' tion and slotted to pass over the head on Witnesses:

said bolt o1' stud and to engage with the in- FLORA HoFLmIsTER,

clnes on the under side of the head. NELS CHRISTENSEN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Iatents, Washington, D. C. 

